Door-knob.



H. G. VOIGHT.

DOOR KNOB.

APPLICATION :FILED 11113.31, 1914.

IIII` [NVENTOR Patented June 16,1914.

R fo 00 WITNESS@ CDLUIIIA PLANOGIAHI 00.. Wm. D. C.

HENRY G. VOIGHT, OF NW BRITAIN, CONNECTICUT.

DOOR-KNOB.

Application led March 31,`

Specification of Letters Patent.

Patented June 16, 1,914. 1914. sea1No.s28,614.

To all whom t may conceal-"fn f 'j Be it known that I, HENRY G. VOIGHT, of New Britain, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Door Knobs; and I do hereby declarel the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to an improvement in door knobs.

I-Ieretofore door knobs of the type herein disclosed, have been composed of an integral metal shank having a peripheral groove formed in the larger end thereof, and a metal top or body formed or drawn partly into shape in a die and then completed by shaping and forcing its edge into the groove in the shank.

The object of my invention is to simplify and considerably cheapen the cost of manufacture, and it consists in the details of construction as will be more fully described and pointed out in the claims.

In the accompanying drawing, Figure 1 is a view in section of the completed knob; Fig. 2 is a view in section of the two parts of the shank assembled before they are permanently united. Fig. 3 is a view of the body of the knob before it is applied to the shank and Figs. 4 and 5 are views of the two parts of the shank.

1 represents the body of the knob, which is first drawn partially into shape as shown in Fig. 3, and then completed by forcing its free circular edge 2, into the groove 3 formed in the larger outer end 4 of the shank. This shank instead 0f being cast, and in one piece, is in two parts or sections 4 and 5, both of which are turned in automatic machines from rod stock. The outer and larger member 4 is shaped as shown, that is to say, is substantially saucer shaped and is provided in the periphery with the groove 3 lfor the body l. This member 4 is provided centrally with an opening, preferably circular for the reception of the reduced end 6 of the smaller section 5, the shoulder 7 at the base of the reduced portion, forming the seat on which section 4 of the shank rests and against which it is secured. The inner face 8 of sec tion 4, adjacent the central opening therein is knurled or otherwise roughened, so that when the reduced end 6 of the smaller section of the shank is turned down onto the said roughened face, it will make a connection sufliciently strong to prevent the possibility of either The smaller section 5, is provided with an angular bore 9 for the passage of the angular spindle which connects the knobs on the operating mechanism of the latch bolt, and is provided with a screw hole (not shown) for the passage of the binding screw which locks the knob to the spindle. The bore of the reduced portion 6 of section 5 of the shank is preferably circular, and of greater diameter than the bore through the larger portion of section 5, and it is preferably reduced in thickness at its outer or free end so as to permit it to be readily turned over or upset against the seat 8 in section 4, and if desired the outer face of the free end of said reduced portion may be roughened to engage the roughened seat 8.

By making the shank of two parts, either iron or brass, it is possible to use standard stock for both parts and make them on automatic machines with but comparatively little waste. Heretofore these shanks have been in one piece and when made of brass the reduced end, is as a rule, reinforced by an iron core. Such construction is not only comparatively expensive to make, but they can not be made on automatic machines. Again any attempt to construct the shank from rod stock in one piece, would render the cost of production prohibitive, as the stock would have to be of a maximum diameter and the shaping of same would consume labor and material which I save by making the shank in sections.

Having fully described my invention what I claim as lnew and desire to secure by Letters-Patent, is

l. As a new article of manufacture, a knob shank made in two parts of unequal diameter, the larger part having an opening to receive the end of the smaller part, and the smaller part having a reduced end to enter the opening in the larger part and an external shoulder on which said larger part rests, the reduced end of the smaller part being turned down over the inner face of the larger part cf the shank for locking the two parts together.

2. As a new article of manufacture, a knob shank made in two parts of unequal d'1- ameters, one part having a peripheral groove for the attachment of the body of the knob, and Vwith a central opening for a reduced section turning on the other.l

end of the other part, the two parts being united by turning down said reduced end onto the inner face o'f 'the other part.

3. As a new article of manufacture, a knob consisting of a body and a two part shank of unequal diameters, the larger part of the shank having a 'central opening to receive a reduced endof the other part, and a peripheral groove to receive the body of the knobl and the other portion of the shank having a reduced 'end to enter the central opening in the companion part of the shank :mA

an external shoulder on which said part rests, the parts of the shank being united by turning the reduced end down against the inner face of the other part of the shank.

In testimony whereoi', I have signed this specification in the presence of two subscribing witnesses,

HENRY G. VOLGHT.

Vitnesses M H. CAMP, Bonnin` K. VoIGH'r.

Gopiesjf this patent may be obtained for @ve cents each, by addressing the Commissioner of Patents,

" i i Washington, D. C. 

